Major road construction projects on Routes 422, 322, 897 and six area bridges are underway or scheduled to begin soon around Lebanon County. The projects will result in delays and, in some cases, detours.

The total cost of the projects is expected to eclipse $30 million in Lebanon County alone, according to a spokesperson for the Pennsylvania Department of Transportation. Many of the improvements will improve the flow of traffic and safety conditions in the affected areas. Bridges in disrepair will either be replaced or rehabilitated.

PennDOT has provided a list of the major projects coming to Lebanon County this year, when they will begin and end, and the driving conditions you might encounter on your trip.

Already underway

What to expect: No delays during rush hours, with minimal to mild delays at other peak driving times. There are restrictions on Route 72, Cornwall Road or Rocherty Road during morning and evening commutes, between 6 a.m. and 8:30 a.m. or 3:30 p.m. and 6 p.m.

Fisher Avenue Bridge Replacement

Where: Fisher Avenue over Qureg Run in Union TownshipStarted: April 9Ends: July

What to expect: Delays and eventually a detour, if only for a short period of time. The bridge is being replaced in two stages. During stage one, two lanes will be restricted to one. During stage two, the bridge will be closed and traffic detoured.

Where: 1.7 miles of Route 422 between Route 645 (Kutztown Road) and Martin Drive in MyerstownStarted: April 23Ends: Late October

What to expect: No delays during rush hours, with minimal to mild delays at other peak driving times. There are no traffic restrictions during morning and evening commutes, between the hours of 6 a.m. and 8:30 a.m. or 3:30 p.m. and 6 p.m. Conditions at other times are unpredictable, however, as the disrupted areas including lane restrictions are constantly changing.

Starting soon

Route 322 Resurfacing

Where: 3.6 miles of Route 322 between Route 72 (Lebanon Road) and the Lancaster County lineStarts: Week of May 15Ends: October 2019

What to expect: No delays during rush hours, but minimal to mild delays at other peak driving times. There are no traffic restrictions during morning and evening commutes, between the hours of 6 a.m. and 8:30 a.m. or 3:30 p.m. and 6 p.m. Outside those time periods, anticipate lane restrictions with flaggers directing the flow of traffic. All paving will be performed during overnight hours, which should be the worst of it. Project continues into Lancaster County for an additional 3.9 miles.

What to expect: Minimal delays, possibly none at all. All of the work will be done at night between the hours of 9 p.m. and 6 a.m. Northbound I-81 is reduced to a single lane, but with so few vehicles on the road at those times, it shouldn't really impact on travel conditions.

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The Cumberland St. bridge on the way into downtown Lebanon will be reduced to one lane.(Photo: Andrew Kulp, Lebanon Daily News)

Cumberland Street Bridge Replacement

Where: Route 422 westbound over Quittapahilla Creek between South Lebanon Township and City of LebanonStarts: MayEnds: October

What to expect: Mild delays. Two lanes will be reduced to one while bridge is being rebuilt.

Horseshoe Pike Resurfacing

Where: 1.8 miles of Route 322 from west of Dauphin County line to east of Route 117 (South Forge Road)Starts: After Memorial DayEnds: Mid-September

What to expect: No delays during rush hours, but mild delays at other peak driving times. There are no traffic restrictions during morning and evening commutes, between the hours of 6 a.m. and 8:30 a.m. or 3:30 p.m. and 6 p.m. Outside those time periods, anticipate lane restrictions with flaggers directing the flow of traffic.

What to expect: Bridge closure will cause significant alterations to your travel plans, as all traffic is detoured. This is the only thoroughfare in and out of the south end of Jonestown, with no great alternatives in close proximity.

What to expect: Minimal to mild delays. Traffic will be reduced to a single lane with flaggers directing the flow of traffic. PennDOT will release an advisory before work is scheduled to begin at these sites.

What to expect: Minimal delays. Drivers should reduce speeds over fresh oil and chips to prevent spraying loose stones.

Late 2018 or 2019

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A total of six bridges such as this on Market St. in Heidelberg Township will be rehabbed or replaced beginning in 2018(Photo: Andrew Kulp, Lebanon Daily News)

Market St. Bridge Replacement

Where: Market Street over the east branch of Hammer Creek in Heidelberg TownshipStarts: Early FallEnds: Fall 2019

What to expect: Bridge closure will cause minimal delays, largely affect residents of this road.

Palmyra Bellegrove Road Bridge Rehab

Where: Palmyra Bellegrove Road over Quittapahilla Creek between North Annville and North Londonderry townshipsStarts: OctoberEnds: September 2019

What to expect: Mild to significant. Road will be closed and traffic detoured.

Route 897/Main St. Resurfacing

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A large stretch of Route 897 beginning in Heidelberg Township and crossing into Lancaster County will be getting a much needed resurfacing in the coming year.(Photo: Andrew Kulp, Lebanon Daily News)

Where: Between Lancaster County line and Market Street in Heidelberg TownshipStarts: Late 2018Ends: Fall 2019

What to expect: Mild delays possible during all project hours. Anticipate lane restrictions with flaggers directing the flow of traffic. Work will not be restricted for morning and evening commuters. The bulk of this project, if not the entirety, will be performed in 2019.

S. Spruce Street Bridge Replacement

Where: South Spruce Street over the Quittapahilla Creek in Annville TownshipStarts: January 2019Ends: October 2019

What to expect: Bridge closure will cause mild delays, largely affecting residents of this and nearby roads.